Outbound Engineering: A Model of Unsolicited B2B Outreach as a Measured System

Unsolicited business-to-business outreach by email is practised as writing and volume, and evaluated through vendor aggregates without controls. The sales-technology literature studies the adoption and use of tools by salespeople; the deliverability standards instrument the receiving side of a message's fate. Neither treats the operator's sending system as an artifact with acceptance criteria. This paper proposes outbound engineering, defined as building and running unsolicited B2B outreach as a measured system, and specifies it by three membership properties: provenance of every address, a message-level record that carries each send's treatment before its outcome arrives, and a gate that can refuse a send. Three further properties present in every instance the author has built, namely isolation, reading-driven volume and behaviour-driven sequencing, are held as design hypotheses rather than as definitional. The construct is positioned against eight neighbouring constructs, feedback control is adopted as the method theory, and seven propositions are stated with their outcome variables, floors and confounds. The contribution is a treatment schema for a domain whose outcome schema has been standardised for two decades, in delivery status notifications (RFC 3464) and feedback reports (RFC 5965), and whose treatment side has not. The construct is not the pre-sales occupation "sales engineering", and the phrase, though not the definition offered here, has a prior practitioner use. No empirical result is claimed. A bounded pre-registration plan is attached as an appendix.